Ive been out with guys going over 15ft off of Double ups and these guys arent pros ,a friend can do backrolls about 10ft + off the doubleups so im sure the pros can go mwell over that at least off the DUP..later heres murray hes at least 15ft in an old pic i got form him..

I have a picture of some guy on a liqued force super squirt doing a hoochie glide and the photographer said he had to be over 20 feet. I t was off a double-up(maybe even a triple up) in a sequence photo in WBM. I don't remember the guys name but at the end of the sequence in the on the landing this guy realy lolks like he's getting punished. I am skepticle though of it being 20 feet but it was big.

That sequence in wakeboardboard magazine was of Rob Reid it was the biggest thing that i have seen ever, i wish the photographer would of not zoomed in as much, so we could get a better perspective on how high he was.